When the archaeologists are under the water, they can't see things very clearly.
当考古学家们在水中时，他们看东西不太清楚。
You'll see things like important to safety and safety related. Safety related is that it's very clearly needed for safety.
你会发现对安全重要的事情或与安全相关的，安全相关的就是，那对安全是非常重要的。
People have strong emotions, often see things very differently, and do not always communicate clearly.
人有强烈的情感，对事情的看法非常不同，而且也不会总能做到交流清晰。
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